Which license permits indefinite use after a single payment?

• A. Royalty-free
• B. Public domain
• C. Creative Commons
• D. All rights reserved

Answer: (A)

Treating licensing terms for media, the idea of paying once and then using the asset indefinitely is described by royalty-free licensing. With royalty-free, you make a single upfront payment and gain ongoing rights to use the asset in many projects without paying further royalties, as long as you stay within the license rules. This contrasts with public domain, where usage is free without any payment at all, and Creative Commons licenses, which are typically free to use but come with conditions like attribution or specific restrictions rather than a one-time payment for lifelong use. All rights reserved means the creator retains all rights and usage is limited unless you obtain a separate license or pay again under specific terms, not a blanket indefinite right after one payment. So the best fit is royalty-free.